Automatically transform to thousands etc. for shorter tick labels.

[mbostock]

For large powers of ten, tick labels are often truncated by default:

It’d be nice if we could detect this sort of powers-of-ten ticks and automatically applied a suitable scale transform, such as converting to billions (y: {transform: d => d / 1e9}):

[Fil]

This looks quite feasible now, but where would we show ("millions")?

[mbostock]

We’d add (millions) to the end of the scale label. Which wouldn’t look great if there was already a parenthetical, but it’s fine because you can always customize the label yourself.